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Inductance and Capacitance INEL 4075 –Chapter 7 Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM.

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Presentation on theme: "Inductance and Capacitance INEL 4075 –Chapter 7 Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM."— Presentation transcript:

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2 Inductance and Capacitance INEL 4075 –Chapter 7 Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM

3 Capacitors Capacitors store electrons in form of separated charge or E field.

4 Capacitance, in Farads [F] The capacitance is The charge The current in a capacitor The voltage, cannot change instantaneously

5 Capacitors Energy stored in capacitor Parallel and Series capacitors

6 Electric Circuit

7 Discharging a capacitor

8 Charge/discharge Capacitor Piezo- electric material

9 Chip – (integrated circuits) The 555 timer regulator pin layout (from

10 1k C (  F)Frequency (Hz) C C C C C C C7.0101,173

11 What is a circuit Board? Nodes?

12 Myth: Why is the Ocean Blue? FALSE: The ocean is blue because the sky reflection on its surface. TRUE: Water is blue.  frequency spectra  But you need a huge amount of it to really see its color.  Look at a swimming pool as it gets deeper; even on cloudy days.

13 Myth #2 FALSE: Thomas Edison, greatest contributor to Electricity and systems used today. TRUE: Nikola Tesla – greatest contributor to Electricity.  Invented ac motor,  perfected dc motor,  invented radio transmission, (wireless)  designed Niagara Falls generator,  distribution systems,  fluorescence lamps,  remote control, wireless,  logic circuits,  3 phasic and many others.

14 Inductors Store magnetic fields Symbol

15 Inductors Energy storage – inductors store energy in the form of a magnetic field Series and parallel inductance Initial conditions of switch circuits solenoid

16 Inductance, in Henries [H] The inductance is The voltage in an inductor The current, cannot change instantaneously

17 Inductors Energy stored in inductor Series and Parallel inductors

18 Where to find this material? Also look at:


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